Race Face Era SL Crank Arms No BB 136 BB 165mm Stealth Model-Aero Flat Alloy R9150 & R9170 Di2 and

R9150 & R9170 Di2 and Ultegra 8000

Misc 130-160mm

Ergonomic design with strategic padding to reduce hand fatigue and improve grip

Shims can be acquired from E*thirteen

Race Face Era SL Crank Arms No BB 136 BB 165mm Stealth Model-Aero Flat Alloy R9150 & R9170 Di2 andSuperlight version of the revolutionary Era crank, approved for bikes up to 140mm Same layup and proprietary insert bonding tech as the Era All unnecessary body material eliminated, maintaining strength Pedal and drive side spindle inserts minimized Spindle integrated with non drive crank arm, eliminating non drive crank bolt Steel wear plate sized down to focus on highest wear areas Versatile Cinch system offers interchangeable spiders, limitless